11.24: Two wave pulses travel to the right toward a rigid boundr*udwcbd)xv --5er5n ary as shown. After reflection of the triangular cr5n -x ed dw)5rv*-ubpulse, the pulses will interfere. Which one of the following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface of a (:hd ogl*f8klplastic block. Which pair of statements correctlhofldg k l*:(8y describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labelwe4hn 1elm1:6 /hc qbned B in the diagram sh/:61 1qnncwee m4l hbhown. The ray reaches a flat mirror placed at an angle $\Theta$ to the horizontal as shown. Which one of the locations labeled in the figure best represents the point through which the ray reflected from the mirror will pass?

  00.04: Specular reflection occurs whenever light is incident sgp*48n ju ln7on

  05.18: A student hold a hand mirror to observe the back of her )vxft omy66l 3head while standing in front of and looking into a wall mi6)t 6x3fylvom rror. If she is standing 4 ft in front of the wall mirror and she holds the hand mirror 1 ft behind her head, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction wmv r;e2g.i e3q9:7v8ptyfw amp+ 3cxdhen it enters a new material. Which one of the following choicqe38x+p9edt ; rcmfpaivmg.7:vw3 2 yes is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in a tyvbuc3y ;m m13ransparent material. What is the index of refraction of the materiamv um1 yb3;y3cl?

  98.04: As sound travels from steel into air, both its spe7t6y1fwa12w j ejeieip)fh 2+ed and its:

  00.01: As a wave moves from one medium to a second medium with a dih9/dyhvnf9+ 7 wt eidjp4/ ,jrfferent index of refra9wrj7ipd /thdy9 /vfhn, 4 +ejction which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequen24yxo4xaz k fx7hw 6h.cy travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement ishf642x 4kx hoz.7a xwy true about the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed aly0uvw g( .fw:8c0sa it the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. :fw a0l vu0y8(iswcg.In the water, the sound wave has a frequency $f_{water}$, wavelength $\lambda_{water}$ , and wave speed $v_{water}$ . When the sound wave enters the air it has a frequency $f_{air}$ ,wavelength $\lambda_{air}$, and wave speed $v_{air}$ . Which one of the following relationships correctly compares the frequencies, wavelengths, and wave speeds of the waves in the air and water?

  02.33: A short burst of white light strikes a rectangular glass block wi5i ,jhfm1h w0eth an ang1w0,f e5ih hjmle of incidence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed toward a point P ,bov/f v z7 tmcaurdzbvb3 xt96,66k,on a boundary as shown to the right. Which segme vbxrvvt,fo6 z7,6c 3 /uat 6,mzdb9kbnt best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entering9 y, 6my8kbtcy air from water? Ai my,by86tyk 9cr is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of inct-zxyd1 /xte+j lu4 1fidence for which the anglej lf+1xetzd u -ty4/1x of refraction is:

  95.12: The principle under9.m j x0lsk;lt)ih/ntkx3 +z hlying fiber optics is:

  98.36: The critical angle in a transparent substance surroundesm nv-hq2us ;6d by air is $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels from material X with an index of refraction of :eb9 kab2mnfu * m /euq/b0s4wn = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of li :/qmbesuk92m w*u a0fenb4b /ght in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond auu3t,y3x6+ iecu3k3qqh hf k *nd a piece of glass by observing the critical angle of the light in each material. Glass with an index of refracqx+ tq3, ck63iy e*uh3hu3ufk tion of 1.52 has a critical angle of $41.1^{\circ}$ while a diamond with an index of refraction of 2.42 would have a critical angle of:

  05.26: Light shines from air into a clear material. When the lp,v c7ueb5iuda009n light makes an angle of inciden buv900pie75n ,ldcauce equal to $30.0^{\circ}$, the light refracts at an angle of 1$5.0^{\circ}$. If the light is shone from an angle of incidence of $60.0^{\circ}$, what is the angle of refraction?

  95.40: A Metrologic laser is embqayw3vded+y oq7+ y: .edded in a material of index of refraction n. The laser beam emerges from the material q++de vo :yy .37ydaqwand hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passesd9hcjep9ng:*rw n 4p -z04jou from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (njugorch9e pw*0:d n9zp4-n j41, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2ffiv3n +vt0s i mf:-u7 to medium 3 as shown in the diagram. Wsi3ffv-nv f0t+7 :u mihat may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a lohrpouk*0;dr p bz 5lqx; x7**ight ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the following best describes the relation between lpdx;zur *0*7 bhxkorp5; q*othe indices of refraction?

  09.34: The diagram below shows thh,i2 u 1ooc1u84f8 khba;fjg z(sx tz,e path taken by a monochromatic light ray traveling through three media. (fi oou;x 8, jbzzgh481fc,2tau1sk hThe symbols $v_1$,$\lambda_1$ , and $f_1$ represent the speed, wavelength, and frequency of the light in Medium 1, respectively. Which of the following relationships for the light in the three media is true?

  99.26: A beam of light c9 k6:uhymxognko9/ r4h d*uj7 z8 ob;traveling in glass ($n_g$=1.5) strikes a boundary with air ($n_a$ =1.0) at point P.The angle
of incidence is $60^{\circ}$ as shown in the diagram. Which ray would best indicate the beam’s path after point P?

  04.35: A ray of light is incident on the surface of a rectangular b-cq5o.z))fn ;-d ex2i j tellxlock of glass at an angle ofl 2o)5 qjec)exft.-nx -; lzid $45^{\circ}$. It refracts into the glass and then strikes the side of the block as shown in the diagram. What would be the most likely path of the light after striking the side of the glass block?

  13.27: Light of wavelength 600nm is transmitted from air into a piece of glass.bot*t4k3b 8 da65jrb b Which one of the labeled arrows best indicates the path of the light ray after it enteotb tb8k4j*3ar5 bb6drs the glass?

  14.44: A ray of monochay *gzlmzn(.amk++le( :ooa z9t5-cjromatic light enters the right-triangular glass as shown. The glass has an index of.g*e c z5oaoz9yn:(+l-a +mm ltaz(jk refraction of 2.00 and it is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?